Its reactions

Its reactions are not coordinated yet, he is not capable to grab a ring intentionally yet, but the movement repeats many days and weeks, in a brain the special operations procedure is gradually built and at last approximately by six months the child already himself, voluntarily, having seen a ring, grabs it.

From this example we see how the nervous system of the baby develops: he by repeated repetitions learns to coordinate the movements of eyes and hands.

More difficult situations also demand equally both repetition, and experience.